MAUDE Adverse Event Report: MEDTRONIC PUERTO RICO VILLALBA SPRINT QUATTRO SECURE MRI SURESCAN; PERMANENT DEFIBRILLATOR ELECTRODES

Model Number	6947M55
Medical Device Problem Code	Over-Sensing (1438)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	05/27/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the right atrial (ra) lead displayed undersensing resulting in misclassification of episode detection.Subsequently, the patient received shocks and anti-tachycardia pacing (atp) for an episode detected in the ventricular tachycardia (vt) zone that was suspected to be supra ventricular tachycardia (svt).A shock possibly accelerated the arrythmia into a ventricular arrythmia.Additionally, the right ventricular (rv) lead displayed oversensing.The ra and rv lead remain in use.No further patient complications have been reported as a result of this event.
Additional Manufacturer Narrative
Continuation of d10: dtma1qq crt-d implanted: (b)(6) 2023.Medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.Medtronic will submit a supplemental report if additional relevant information becomes known.

• Brand Name: SPRINT QUATTRO SECURE MRI SURESCAN
• Common Device Name: PERMANENT DEFIBRILLATOR ELECTRODES
• Manufacturer (Section D): MEDTRONIC PUERTO RICO VILLALBA; road 149 km 56.3; villalba PR 00766
• Manufacturer (Section G): MEDTRONIC PUERTO RICO VILLALBA; road 149 km 56.3; villalba PR 00766
• Manufacturer Contact: gerard torenvliet ; 8200 coral sea st ne; mounds view, MN 55112-4391 ; 7635269277
• MDR Report Key: 25527237
• Report Number: 2649622-2026-17908
• Device Sequence Number: 21113251
• Product Code: NVY
• UDI-Device Identifier: 00643169356610
• UDI-Public: (01)00643169356610(17)181223
• Combination Product (Y/N): N
• Initial Reporter State: OK
• Initial Reporter Country: US
• PMA/510(K) Number: P920015
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2017
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Nurse Practitioner
• Type of Report: Initial
• Report Date (Section B): 06/16/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 12/23/2018
• Device Model Number: 6947M55
• Device Catalogue Number: 6947M55
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/27/2026
• Initial Report FDA Received Date: 06/16/2026
• Date Device Manufactured: 01/25/2017
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: 5076-45 LEAD, 429888 LEAD.
• Patient Age: 58 YR
• Patient Sex: Male
• Patient Weight: 33 KG